Dissolve surface node

Deletes points, primitives, and edges from the input geometry and repairs any holes left behind.

All

Parameters

Example files

Unlike the Delete SOP, this operator fills any holes left by the deleted edges.

Tip

This operator can easily creates polygons with more than 4 sides. You may want to append a Divide SOP to triangulate any N-sided polygons created by this operator.

Using Dissolve

Select the points, edges, or polygons you wish to dissolve.
Click the Dissolve tool on the Polygon tab.

Turning on the Remove Inline Points checkbox on the parameter editor will remove points that no longer have edges attached.

Parameters

Group

The points, primitives, or edges to delete. This field is treated as a set of edges. Edges that are not part of any entity in the group field do not get deleted.

Normally you will use this operator in the scene view and simply select the edges you want; however, if you need to you can also use a space-separated list of the following codes in this field to specify edges:

Code	Meaning
`n`	All edges in primitive number `n`.
`pn`	Point number `n` / edges with point number `n`.
`nem`	Edge number `m` of primitive `n`.
`pa-b`	Edges between point number `a` and point number `b`.

Operation

Delete selected	Delete the entities listed in the Group field.
Delete non-selected	Delete all entities except those listed in the Group field.

Re-compute Normals

Calculates the normals on remaining geometry after the deletion occurs.

Remove Inline Points

Removes points of dissolved edges if they do not affect the resulting shape.

Collinearity Tolerance

Points within this distance of being on the same line are deleted when Remove inline points is on.

Example files

DissolveBox

$HFS/houdini/help/examples/nodes/sop/dissolve/DissolveBox.cmd

Load | Launch

This example shows how the Dissolve SOP is used to remove points, edges or primitives of a geometry. The Dissolve SOP automatically patches any holes remaining after the dissolution of various elements.

Usages in other examples

Example name	Example for